From: yvon.thoravalNO-SPAM@... (Yvon Thoraval)
Date: 2004-03-29T23:34:31+09:00
Subject: Re: [newbie] linked hash

Robert Klemme <bob.news@gmx.net> wrote:

> Dunno that class but what is it that you want to achieve?  Do you need a
> sorted Hash?

no ordered only as it is entered, in the mean time i've found a solution
:

# OrderedHash.rb

class OrderedHash < Hash

VERSION = "2004-03-28"

        def []=( key, value )
                ( @ordered_keys ||= [] ) << key unless has_key?( key )
                super
        end

        def each
                @ordered_keys.each do | key |
                yield key, fetch( key )
                end if @ordered_keys
        end

        def keys
                a = Array.new
                @ordered_keys.each do | key |
                a << key
                end if @ordered_keys
                return a
        end

        def join_keys(s)
                return self.keys.join(s)
        end

        def values
                a = Array.new
                @ordered_keys.each do | key |
                a << fetch(key)
                end if @ordered_keys
                return a
        end

        def join_values(s)
                return self.values.join(s)
        end

end

-- 
yt